Q16 / 160 · TS EAMCET 2007 · Chemistry

Which of the following statements is correct?

  • A
    Silicon doped with boron is an $n$-type semiconductor
  • B
    Silicon doped with arsenic is a $p$-type semiconductor
  • Correct answer
    C
    Metals are good conductors of electricity
  • D
    Electrical conductivity of semiconductors decreases with increasing temperature

Solution

Metals are good conductors of electricity due to the presence of free electrons. Electrical conductivity of semiconductors increases with increase in temperature.

Hence, the correct answer is option: 'C'.

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